Current situation and prospect of comprehensive utilization of phosphogypsum
The environmental problems caused by long-term storage of phosphogypsum are becoming increasingly promi-nent,and the harmless treatment and comprehensive utilization of phosphogypsum are urgent.The research progress of phos-phogypsum in the fields of preparing industrial gypsum and building materials,cement retarders,preparing sulfuric acid co production cement,roadbed materials,filling materials,and soil amendments was summarized,the main research directions of phosphogypsum was introduced,the relationship between comprehensive utilization research and industrialization of phosphogypsum was analyzed.It was pointed out that the core contradiction between phosphogypsum research and industri-alization was depended on the low value of phosphogypsum itself and the high cost of industrial treatment,which was unable to be promoted,and various solutions were proposed to address the above issues.It was pointed out that the future develop-ment of phosphogypsum would require government policy support and maintain a balance between the demand for phospho-gypsum market and the addition of new devices.In terms of the utilization of phosphogypsum,harmless disposal was the foundation,roadbed materials were the main way to absorb phosphogypsum,and soil remediation and ecological restoration were new directions for phosphogypsum utilization.
phosphogypsumenvironmental hazardscomprehensive utilizationproduction and sales dynamic balance
NETL
NSTL
万方数据
维普
